The average american adult has completed an average of 11.25 years of education with a standard deviation of 1.75 years. a random sample of 75 adults is taken. a) what is the probability that the sample will have a mean more than 11.5? b) what is the probability that the sample will have a mean between 11 and 12 years?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field